Which of the following is NOT a postulate of Dalton's atomic theory?

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A All matter is made up of atoms.
B Atoms are tiny indivisible particles.
C Atoms of different elements have the same mass.
D Atoms combine in small whole-number ratios to form compounds.

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Answer: C. Atoms of different elements have the same mass.

Answer: c) Atoms of different elements have the same mass.
Explanation: Dalton proposed that atoms of the same element are identical, but atoms of different elements have different masses and properties

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Which of the following is NOT a postulate of Dalton's atomic theory?

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